#contenitore {
	background-color: red; 
	border: solid 1px black; 
	width: 50%; 
	margin: auto;
}

.bottone {
	
	width: 200px;	
}

#rettangolo {
	padding-left: 100px;
	margin-top: 60px;
	margin-left: 60px;
	border-width: 10px;
	border-color: black;
	background-color: silver;
	outline-color: red;
	outline-width: 10px;
	outline-style: solid;
	border-style: groove;
	border-style: dashed;
	width: 50%;
}